In daily life, you can often see traces of aluminum alloy frames, such as separated aluminum alloy shell frames, industrial computers, and other intelligent equipment hardware shells. Aluminum alloy is favored by the electronic manufacturing industry because of its light net weight, high compressive strength, and strength.

In much electronic equipment, given the limitation of the overall size of the shell, it is difficult to have room for an aluminum alloy radiator in the internal structure of the shell, or the overall size of the aluminum alloy radiator is too small, which is not conducive to better heat removal. This causes that the heat generated by electronic equipment during operation cannot be dissipated in time, which accelerates the consumption of electronic components and brings adverse effects on the application of customers to a certain degree

Therefore, aiming at this problem, insiders are constantly thinking and summarizing, and finally, the basic concept of heat exhaust aluminum alloy shell came into being. The heat exhaust aluminum alloy shell, on the one hand, further optimizes the original flat appearance and selects the dense tooth design scheme, which not only has the heat exhaust characteristics but also makes the shell look more hierarchical as a whole; On the other hand, the external dimensions of the internal structure of the shell can be optimized to make the overall equipment look more delicate.

But for the thin aluminum alloy frame, how should we reduce its deformation in production and processing?

1. Reduce hair germ stress

Using natural or artificial aging and vibration processing can partially remove the stress of embryo material. Production and processing in advance is also an effective processing method. For the larger wool embryo, considering a large amount of residual processing, the shape variable after production and processing is also large. If the excess part of the blank is produced and processed in advance, reducing the machining allowance of each part can not only reduce the deformation of later production and processing but also release some stress after being placed for a certain time after production and processing in advance.

2. Improve the clamping method of aluminum alloy frame

When producing and processing thin-wall aluminum alloy frames, it is best to use vacuum suction cups to obtain a dispersed and balanced pressing force, and then use a small amount of cutting to produce and process, which can effectively control its deformation.

3. Apply appropriate production and processing steps

In high-speed milling, considering a large amount of machining surplus and intermittent milling, the milling operation process often forms vibration, which affects the machining accuracy and surface roughness. Therefore, the high-speed production and processing process of CNC machine tools can usually be divided into rough machining - semi-finishing - corner cleaning production and processing - finishing, etc. For aluminum alloy frames with high precision standards, it is sometimes necessary to carry out semi-finish machining again, and then carry out finish machining.

After rough machining, the aluminum alloy frame can be naturally cooled to remove the stress formed by rough machining and reduce deformation. The machining allowance after rough machining should exceed the shape variable, usually 1~2 mm. During finish machining, the finish machined surface of the aluminum alloy frame should always maintain a balanced machining surplus, usually 0.2~0.5 mm so that the NC tool is in a relatively stable state in the production and processing process, which can greatly reduce the milling deformation, obtain better product quality on the surface and ensure product precision.

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